vpnor: Rename mboxd_pnor_partition_table sources to backend

Change-Id: I6f0fff4ab54e011c1765fc04186e899754787641
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/vpnor/pnor_partition_table.hpp b/vpnor/pnor_partition_table.hpp
index 90f014c..cfd47b5 100644
--- a/vpnor/pnor_partition_table.hpp
+++ b/vpnor/pnor_partition_table.hpp
@@ -10,8 +10,8 @@
 extern "C" {
 #include "backend.h"
 #include "common.h"
-#include "mboxd_pnor_partition_table.h"
 #include "pnor_partition_defs.h"
+#include "vpnor/backend.h"
 }
 
 struct mbox_context;